Two blogs under same log in must have two seperate authors ( and not one)

Hi, My primary blog is bokmal73 and I have now created another blog which is finakristina but I have created it under my existing wordpress acount bokmal73. When writing posts for the two different blogs the posts must have different authors. As it is now, bokmal73 appears as author for both my blogs.
Happy to receive advice on how to solve this. One different author per each blog.
Thanks / bokmal73

Hi there,
Every blog has a sole owner and it is the person with the username account who registered the blog under that username account. That username account has to add the other username account(s) ie. as Admin to the blog you want to be transferred to them and then use the process to transfer the blog to their username account.

Hi,
THanks for your reply. Can I delete my "sub-blog" finakristina but without deleting my main blog bokmal73? I would like to log out from my bokmal73 account and to create a new main account for finakristina with seperare email address.
So in practice; how do I delete my sub-blog finakristina without deleting my main account bokmal73?